//List
main() {
  var constantList = const [1, 2, 3];
  print(constantList);

  var arr = [1, 2, 3];

  print(arr);

  print(arr[0]);

  arr[0] = 0;
  print(arr[0]);

  print(arr.length);

  arr.add(4);
  print(arr);

  var arr2 = const ["abc", 2, 3];
  print(arr2);

  print(arr2.contains('abc')); //true
}
